View Full Version : What are the best frustrum culling techniques
09-29-2001, 05:14 AM
What are the best frustrum culling techniques
according to you ?
I'm totaly new with this and want to implement the 1st step of a tree-based visibility algorithm.
tanks for help,
10-01-2001, 07:02 AM
You might want to have a look here
It is very interesting and have downloadable source too.
Im no opengl wizard but I do know how to clip points faster than the this frustram tut
no prep required
just project a line from your camera into infinity
get the dotproduct of each point in space to this camera projection
any points with a dp of less than X amount
can be thrown in a prep list
then do your frustram tests on this reduced point count
the cool bit is , if you allow enough play in with your dp clipping you only need to dp test every 2 or 3rd frame
this is a real time saver
10-02-2001, 01:18 PM
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